Mechanical movement.



' PATENTBD JUNE 16, 1903 A. PLAGMAN. I l MEGHANIGAL MOVEMENT.

APPLICATION FILED we. 4. 1902.

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.fldol Pla man A. PLA'GMAN'. MECHANICAL MOVEMENT;

- 'PATENTED JUNE 16,1903. 4

APPLIOATION FILED AUG. 4, 1902.

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u/enfarx v I No. 730,961. PATENTED' JUNE 16, 1903. A. PLAGMAN.

MECHANICAL MOVEMENT,

APPLICATION FILED AUG. 4, 1902.

N0 MODEL. I 3 SHEETS-SHEET 3.

THE NORRIS ETERS CO FHOTO- H, D. C.

- UNITED STATES Patented June 16, 1903.

ADOLPH PLAGMAN, OF DAVENPORT, IOWA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent N 0. 730,961, dated June16, 1903.

Application filed August 4, 1902. Serial No. 118.288. (No model.)

To all whom it may concern.-

Be it known that I, ADOLPH PLAGMAN, a citizen of the United States, anda resident of Davenport, in the county of Scott and State of Iowa, haveinvented a certain new and useful Improvement in Mechanical Movements,of which the following is a full, clear, and exact description.

The object of my invention is to provide simple and effective mechanismfor converting a continuous rotary motion into a rotary reciprocalmovement the parts of which are easily assembled and can readily beseparated and removed and replaced where repairs are considerednecessary by the ordinary user without any previous training or specialtools. This I accomplish by the means hereinafter fully described and asparticularly pointed out in the claims. I

In the drawings, Figure 1 is a plan view of my invention. Fig. 2 is avertical transverse section taken on dotted line 2 2, Fig. 1, looking inthe direction of the arrows. Fig. dis a front view of the rack havingthe drivinggear removed therefrom. Fig..4:- is a longitudinal centralsection of my invention.

Referring to the drawings, A represents a drive-shaft which when inoperation is revolved continuously in one direction and is journaled ator near its outer end in a standard a, arising from and preferablyforming a part of an extension of the framework B. This frameworkconsists of an open casting, in the perpendicular end of which, b, theinner end of the drive-shaft has bearings, and its height adjacent tosaid end I) is not less than twice the distance from the plane of itssupport to the center of the bearings therein. The end portion of thisframework-opposite end bis preferably stepped to a less height and nearthe extremity thereof has pivoted to a vertical pivotal bolt cahorizontalrotary: reciprocal rack C.

The open frame of rack 0 branches in opposite directions from thepivotal boss or knuckle thereof and curves forward therefrom in suchmanner as to form a semicircle, and therefrom the ends. of thissemicircular portion are so designed as to form the ends and one side ofan elliptical figure, the major axis of which is considerably greaterthan the diameter of the rear semicircular portion of the rack. Theforward curved sweep of rack-frame is struck from the pivotal center ofthe same and has rack-teeth d projecting toward said center from theinner surface thereof that mesh with the pinion D, secured to the rotaryreciprocal shaft E, having suitable bearings in the upper and lowerparallel stretches of the framework B. As this rack moves back and forththe rack-teeth d engage pinion D and impart a rotary reciprocal movementto shaft E. In order to produce this movement of rack C, an ellipticalactuating-rack F is provided, which is of such dimensions that itsurrounds the elliptical outer portion of rack G, and has its sidenearest the pivotal center of the-latter made straight and journaled inopen bearings e e in said rack 0, near the ends of the semicircularportion thereof. Between these bearings e e the rack F is sagged ordipped downward, and midway between said bearings supports a coilexpansion-springf, the upper end of which bears against an overhanginglug g, projecting forward from an arch G, whose ends are secured toand'spring from suitable lugs g g on the inner side of the branches ofthe semicircular portion of rack O.

The portion of the actuating-rack extending outsideof rack O is paralleltherewith,

and the stretch or side thereof farthest from the pivotal center of saidrack 0, coming within the radii bounding the rack-teeth d,

is provided with a series of equidistant cogpins h, projecting from theouter surface thereof farthest from rack O, which are ongaged by thedrive-gear K on the contiguous end of the drive-shaft A. Just beyond theends of these series of pins h the actuatingrack F is provided withupwardly and downwardly corresponding horns k k, the'edges of which,facing the pins h, are curved and form a continuation of thetop or thebottom edges of said rack, as the case may be, which latter between saidhorns are preferably parallel. Projecting downward from the.upper railof the framework and up from the base- -plate or lower rail thereof arecorresponding guide-lugs I J, which are so situated 'that when the pinsh of the actuating-rack Fare engaged by the under segment of the drive-ICO gear K the under edge of the rack F will move upon and be supportedby lug I, and when the pins h are engaged by the upper segmentthe upperedge will contact with the end of the upper guide-lug.

The operation of'my invention is as follows: Say the rack-pins 7t areheingengaged by the under portion of the drive-gear. The actuating-rackwill move in the direction the under segment of the drive-gear istraveling until the end of the series of pins h is reached, whereuponthe downwardly-projecting horn k at that end of the series will engagethe lower guide-lug I, and assisted by the expansive effort of spring faid said drive-gear to rock said actuating-rack until the cogpins getabove said gear, whereupon, as the upper segment of the latter travelsin the-direction opposite to its lower segment, the motion of theactuating-rack will be reversed until the opposite end of the series ofcogpins is reached. The upper hornadjacent to this latter end will thenengage theupper guide-lug, and partly by its own weight and theengagement of the end cog-pin by the drive-gear the actuating-rack willreturn to its first-mentioned lower position, and so on be moved backand forth. The motion of the actuating-rack isiniparted to the-rack G,

and this rack in the manner hereinbefore explained imparts its motion tothe reciprocal rotary shaft.

What I claim as new isl. A mechanical movement comprising acontinuously-revolving shaft, a rotary reciprocal segmental rack, ahinged rack carried thereby and engaged by said continuously-revolvingshaft, and a rotary reciprocal shaft actuated by said rotary reciprocalsegmental rack.

2. A mechanical movement comprising a continuously-revolving shaft, adrive-gear'secured thereto, a pivoted segmental rack, a

rack carried by and hinged to said pivoted rack and engaged by saiddrive-gear in planes both above the same and below the same, and arotary reciprocal shaft actuated by said pivoted segmental rack.

3. A mechanical movement comprising a continuously-revolving shaft, adrive-gear secured thereto, a pivoted segmental rack, a rack carried byand hinged to said pivoted rack, and having a series of cog-pins engagedby said drive-gear in planes both above the same and below the same, anda rotary reciprocal shaft actuated by said pivoted segmental rack,.

4. A mechanical movement comprising a con tinuously-revolving shaft, adrive-gear secured to the inner end thereof, a pivoted rack having teethprojecting from the inner surface of the stretch thereof farthest fromthe pivot, a rack carried by and hinged in open bearings in the sides ofsaid pivoted rack having a series of co -pins projecting from thestretch thereof farthest from its hinge in the opposite direction fromsaid rack-teeth',which are engaged by said drive-gear,'and a rotaryreciprocal shaft actuated by said pivoted segmental rack.

5. A mechanical movement comprising a continuously-revolving shaft, apivoted rack,

' a rackactua-ted by said shaft which is carried by said pivoted rackand has, in addition to the'movement of said pivoted rack an independentmovement at right angles thereto.

6. In a mechanical movement the combination with acontinuously-revolving shaft, and a rotary reciprocal shaft arranged atan angle thereto, of means for operatively connecting said shaftscomprising a segmental rack the axis of which is at right angles to 1said 'continuouslymevolving shaft and is intersected by theaxisthe'reof,and asegmencal-rack hinged to said first-mentioned rack whoseaxis'is atright angles to both said first mentioned rackand :said.continuously-revolvingfshaft.

7. A mechanical movement comprising a -continuously-revolvingshaft, adrive-gear secured thereto,a pivoted segmental rack whose axis is atright angles to and is intersected by the line of axis of said'continuously-revolving shaft, a segmental rack hinged to said pivotedrack in aplane at right angles to the axis of both said shaft andpivoted rack and having a series of cog-pins engaged by said drive-gear,and means for automatically moving said hinged rack up and down, whenthe end pin of said series of pins is-reached by said drive-gear toengage first the upper segment and then the: lower segment of said gear,or vice versa.

8. A mechanicalmovement comprising a continuously-revolving shaft, adrive-gear secured thereto, apivoted segmental rackwhose axis is atright angles to and is intersected by the line ofaxis-'of-saidconti-nuously-revolving shaft, a segmental rack hinged tosaid pivoted rack in a plane at right angles to the axis of both saidshaft and pivoted-rack and having a series of'cog-pins'engaged by'saiddrivegear, and having an upwardly and down- I wardly projecting horn ateach end ofsaid series of pins and two guide-lugs situated above andbelow said hingedrack,substantially as and for the purpose set forth.

9. A mechanical-movement comprising a continuously-revolving shaft,- adrive-gear secured thereto, a segmental rack pivoted in a planeintersected by the line of the axis of said shaft to which its axis isatright angles, and having the portions thereof branching from its pivotbridged by an arch, a segmental rack hinged to pivoted rack adjacent tothe ends of said arch, and sagged downward between its bearing, a springinterposed between the sagged portion of said hinged rack, and saidarch, and a rotary reciprocal shaft engaged cured thereto, a pivotedsegmental rack whose axis is at right angles to and is intersected bythe axis of said shaft, and which has the portions thereof branchingfrom its pivot bridged by an arch, a segmental rack hinged to saidpivoted rack in a plane at right angles to the axes of both said shaftand said pivoted rack, having the portion between its bearing saggeddownward and having a series of cogpins engaged by said drive-gear andupwardly and downwardly projecting horns at each end of said series ofpins, a spring interposed between the sagged portion of said hinged rackand said arch, and two guide-lugs situated respectively above and belowsaid hinged rack, and a rotary reciprocal shaft actuated by said pivotedrack.

11. In a mechanical movement, the combi- AD OLPH PLAGMAN.

Witnesses:

B. L. SCHMIDT, HENRY THUENEN, Jr.

